Patents by Inventor Johann-Diederich Hahn-Godeffroy

Johann-Diederich Hahn-Godeffroy has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Depot preparations in an oily, unsaturated solution for intramuscular injection
    Patent number: 4181721
    Abstract: In order to prolong the effectiveness of depot preparations of progestagens in an oily, unsaturated solution for intramuscular injection having long-term effectiveness sufficient for a desired purpose, the volume of the injection solution is increased such that the duration of the progestational activity is increased to at least 13 weeks while retaining the same quantity of active agent to be administered.
    Type: Grant
    Filed: July 7, 1978
    Date of Patent: January 1, 1980
    Assignee: Schering Aktiengesellschaft
    Inventors: Ulrich Speck, Erwig Pinter, Ursula Lachnit-Fixson, Johann-Diederich Hahn-Godeffroy